I grew up in the US South, where everything was built post-air conditioning in the 70s, and I never saw an outlet without a ground until I went to Japan, where they still aren't standard. In Hawaii, outlets without a ground were more common, but if we're talking about the Mainland US, you really only see groundless outlets in very old buildings that for whatever reason have never been renovated.

Also GFCI is very common now. The vast majority of kitchens or bathrooms will have it. You'd need to find one that hasn't been renovated since the 90s, which definitely does happen, but it's becoming less common.